Reversible photochromics (PC's) work by changing their chemical structure after absorbing UV light, usually from the sun or a UV light. The UV light causes the PC’s to absorb color (like a dye), and then change back to clear when the UV source is removed. They can cycle thousands of times depending upon the application. They can also change from one color to a different color by combination with a permanent pigment.
The most famous reversible photochromic application is color changing lenses for glasses, as found in Transitions® eye-glasses. Reversible PC's are also found in novelty applications such as toys, cosmetics, nail polish, and industrial applications. The largest limitation in using PC technology is that the materials cannot be made stable enough to withstand thousands of hours of outdoor exposure so long-term outdoor applications are not appropriate at this time.
Color Change Corporation carries a wide range of PC products, from raw materials to finished inks, coating, plastics, and products. We can also custom synthesize or formulate a PC material specifically designed for your application. Please let us know if we can be of assistance in creating your custom product!
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